/Engine/Plugins/Runtime/CommonUI/Source/CommonUI/Public/CommonUILibrary.h
Finds the first parent widget of the given type and returns it, or null if no parent could be found.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Common UI", Meta=(DeterminesOutputType=Type)) static [UWidget](API\Runtime\UMG\Components\UWidget) * FindParentWidgetOfType ( [UWidget](API\Runtime\UMG\Components\UWidget) * StartingWidget, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UWidget](API\Runtime\UMG\Components\UWidget) > Type )